Question 21
As a class, close the windows. A student pours a teaspoon of vanilla essence into a saucer. Students at different distances across the classroom raise their hands as soon as they smell it. Record the time the vanilla essence is added. Record your observations in the table below.
| Time when vanilla essence was added | Duration (minutes) for the first student to smell the vanilla essence | Duration (minutes) for half of the students to smell the vanilla essence | Duration (minutes) for students at the back of the classroom to smell the vanilla essence |
|---|---|---|---|
| | | | |
| Time when vanilla essence was added | Duration (minutes) for the first student to smell the vanilla essence | Duration (minutes) for half of the students to smell the vanilla essence | Duration (minutes) for students at the back of the classroom to smell the vanilla essence |
|---|---|---|---|
| | | | |
